Improvement in machines for cutting textile fabrics



ALBIN WARTH.

Machines for Cutting, Textile Fabrics. No.1124,i80. PatentedFeb.27,1872.

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ALBIN WART H. l 2 'sheets-heet 2.

Machines forCutting Textilefabrics. No. 124,180.- PatemedFeb.27,1s72.

' irrnlvr- OFFICE.

ALBIN WARTH, OF STAPLETON, NEW YORK.

Specification forming part of Letters Patent No. 124,180, dated February27, 1872.

To all whom it may concern:

Be it known that I, ALBIN WARTH, of Stapieton, in the county of Richmondand State of New York, have invented a new and useful Improvement inMachines for Cutting Textile Fabrics and other materials; and I dohereby declare the following to be a full, clear, and exact descriptionthereof, which will enable those skilled in the art to make and usethesame, reference being had to the accompanying drawing forming part ofthis specification, in which drawing- Figure 1 represents a sectionalfront view of my invention. Fig. 2 is a similarfview of the same whenthe cutting mechanism is reversed. Fig. 3 is a horizontal section of thesame in the plane .fr x, Fig. 2. Fig. lis, a detached section of theeccentric bearing of the cog-Wheel which forms a part of thefeed-mechanism, the plane of section being indicated by the line y y,Fig. 2. Fig. 5 is a sectional front view ofthe same, the line z z, Fig.4, in: dicatin g the plane of section. Fig. 6 is a transverse sectionofthe spring-stop for the presser-slide in the plane fr', Fig. 2, whensaid spring-stop is thrown back. Fig. 7 is a similar section of 'thesame when the spring-stop is thrown forward. Fig. 8 is a transversesection of the lower portion of my machine in the plane y y, Fig. l.Fig. 9 is a horizontal section ofthe same, in the plane z" z', Fig. 8.

Similar letters indicate corresponding' parts.

This invention relates to certain improvements on that class of machinesfor cutting textile fabrics on which a patent was granted to me August2, 1870, No. 106,101. These improvements consist in the arrangement of aspring-stop in combination with the lifter of the presser-slide, in sucha manner that when the presser-slide is raised and the spring-stop isforced in, and the lifter of the presser-slide is released, the downwardpressure of the lifter retains the stop against the action of thespring, and by slightly raising the lifter the spring stop is releasedautomatically, and the presser-slide can be brought in its workin gposition by the aid of one hand. Also, in the arrangement of a protectorcovering the knife, having an indexslot or point to indicate theposition and course of the knife, said protector forming a guard toprevent the Workman from cutting his tin ger. Also, in the arrangementofa graduated stop vunder thelifter of the presser-slide, to regu-- latethe distance between the upper and lower feed-wheel, and to prevent theupper feed-Wheel from striking against the surface of the lowerfeed-wheel. Also,inthearrangementofau eccentric-pin, forming the bearingfor the pinion which gears in the cog-wheel attached to the feed-wheel,so that if the feed-wheel is adjusted up or down the position of thepinion can be regulated accordingly, simply by turning theeccentric-bearin g. Further, in the arrangement of a rod extending upthrough the hollow guide-bar of the sleeve which transmits motion to thecutter-bar, said rod being acted on by an eccentric or cam, and servingto impart motion to vthe feed-wheel. Also, in the arrangement of acam-lever sliding in the dia rection of the length of the conicalfeed'cam, and acting on the feed-bar, so that by moving said cam-leverthe feed-motion can be regulated. Further, in the arrangement of asleeve moving up and down on a guide-rod projecting from the bracketwhich supports the bearings of the feed-wheel and other parts connectedtherewith, said sleeve being provided with a circular liiange, whichengages with a notch in the cutter-bar in such a manner that thecutter-bar can be swiveled all around said driving-sleeve without beingthrown out of gear with the same. l

In the drawing, the letter A designates a table, which is provided witha circular cavity to receive the platform B, which'supports the workingparts of my machine. From the lower surface of this platform extends aU-shaped bracket, C, which forms the bearings for the axle of ythefeed-wheel D, and for the parts connected with or acting on saidfeed-wheel. Said feed-wheel is driven by a dog, a, which turns freely onthe shaft of the feed-wheel, which is acted upon by a bell-crank lever,b, to which the required motion is imparted by a tappet-rod c. From thebottom-end of the bracket C extends a hollow rod, (I, which is se` curedat its lower end to the frame of the table A, and through this hollowrod extends the tappet-rod c, the foot of which rests upon a lever, E,(best seen in Figs. 8 and 9.) This lever slidesv on its fiilcrumpin,e,and its outer end is bifurcated, and made to straddle au arm, f,whichis mounted on a vertical rockshaft, g, to which an oscillatingmotion can be imparted, by a handle`h, (see Fig. 8.) By turning thishandle the lever E is caused to slide on its fulcrum-pin. The bottomsurface of the lever E is cam-shaped, (see Fig. 8,) and it bears on atapering cam, i, (see "Iligsl1,"8,M and 9,) mounted on a shaft, F, whichreceives a revolving motion -from the driving-shaft G. I As the shaft Frevolves, the cam i impartsto the lever-E andte the tappet-rodcfa-risingand-falling motion', whereby the feed-wheel is actuated, andthe amount of motion is regulated by moving the lever E toward the thickor toward the thin end ofthe-taperingcam On the end of the shaft F ismounted a disk, H, which carries an eccentric wrist-pin, 7s, that'connects, by a pitman-rod, I, with a sleeve, J, movingupand down on thehollow rod d extending from thebracket G. To prevent this sleeve fromturning round it is provided with an arm, Z, which engages with aslotted bracket, K, secured to the frame of the table, (see Fig. 1,)said armbeing protected by a frictionroller, mi', so as to reduce thefriction between it and the slotted bracket. The sleeve J terminates ina circular iiange, m, which engages with a slot, n, in the lower end ofthe cutterbar L, so that the rising-and-falling motion imparttd to saidsleeve is transmitted to the cutter-bar, and at the same time thecutter-bar can be swiveled all round the sleeve J without being thrownout of gear with its drivingflange. Said cutter-bar extends up through aguide-slot provided for it in the lower part of the bracket C, andthrough another guide-slot in the platform B, and it carries thecuttingblade or knife o, which is secured to it by means of a screw orin any other desirable manner. From the platform B rises a column, M,(see Figs. 1, 2, and 3,) against which the the back of the cutter-barrests, and to one side of this column is secured the presser-slide N,(see Fig. 1,) the outer end of which forms the bearing for a pivot, q,supporting the protector O, Then this protectoris turned down to theposition shown in Figs. 2 and 3, it coversthe knife, and it preventspersons from bringing their lingers in unpleasant contact with saidknife, but when said protector is turned upon its pivot free access caube had to the knife. The protector rises and falls with thepresser-slide, according to the thickness ofthe pile or layer to be cut.The outer end of the protector is provided with a recess, if, (see Figs.2 and 3,) so that the face of said outer end is in line with thecutting-edge of the knife, (see Fig. 3,) and, consequently, theprotector' forms a guide by which the direction in which the knife cutscan be observed and directed. The protector also prevents thematerial,while being cut, from being raised by the action of the knife. On theprotector is provided an index, Z1, (see Fig. 2,) to enable the workmanto observe the end of the knife, and to cut precisely to a certainpoint. Said index in ay consist of a slot, as shown, or it may beanindex-hand marked on the protector. the cutter-bar, below the knife, issecured 12a-iso a serrated clearer, P, (see Fig. 2,) to prevent thesocket in which the knife works from becoming choked with iibers andthreads disengaged from the fabric to be cut during the op- "eration ofcutting. The presser-slide N is depressed by the action of a spring, s,one end of --which is hitched to an arm proiecting from the column M,while its other end is attached to a lever, Q, which has its fulcrum'inthe top of ,the presser-slide, and which extends beyond vits fulcrum,and carries a pulley, t, while to the other end of the presser-slide issecured another-pulley, 'u'.- -1 Onthe lower end ofthe presser-slide issecured a pivot, o, which forms -the bearing for the upper feed-wheel S,on the side of which is formed a groovedpulley, w, to rcceive a belt, T,which is crossed, (see Fig. 1,) one strand passingovcr the pulley u, andthe other over the pulley4 t, whence both strands descend through a holeprovided for this purpose in the column M, (see Figs. 1 and 3;) andbeneath the platform B said belt embraces a pulley, al', mounted on apin, b', (see Figs. 4 and 5,) which is secured on the bracket C, and onwhich is also mounted a pinion, c', that is `rigidly connected with thepulley a', and engages with a cog-wheel, d', secured to the side of `thelower feed-wheel D. By means of the belt T, therefore, the motion of thelower feedwheel is transmitted to the upper feed-wheel, and the twofeed-wheels act on the fabric to be cut in the same manner a-sdrawing-rollers, so that I am enabled to make the workin gfaces of oneor both feed-wheels smooth without reducing their effect. In practice Iprefer to make the face ofthe lower feed-wheel smooth, and to changethat of the `upper feed-wheel according to the nature of the material tobe cut, and, in order to keep the working surface of the lowerfeed-wheel smooth I am obliged to form on its side the cog-wheel d forthe purpose of transmitting' its motion to the upper feed-wheel, aspreviously described. The connection between the pin el and the bracketC, (see Fig. 4,) is not direct, but said pin is secured eccentrically ina disk, e', (see Fig. 5,) which is mounted 0n a clamping-screwj",passing through the bracket C. By releasing this disk, and turning itaround, the pinion c can be adjusted to engage properly with thecogwheel d on the feed-wheel D, and, since the feed-wheel has to beadjusted up or down according to the goods to be cut, the adjustment ofthe pinion c is indispensable. By means of the lever' Q, and pulley tthe spring s, which acts on the presser-slide, also serves to keep thebelt T taut 5 and, by the peculiar disposition of the pulleys w, a, andt, the presser-slide can s be moved up or down without affecting thetension of the belt T. The lever Q is provided with a series of notches,so that the action of the spring on the tension of the belt can be 3moving the spring s closer to or regulated by further from the fulcruinof said lever. The presser-slide is raised spring by means of a lifter,U, which has its fulcrum on a pivot, gf, secured in an arm, la', i

against the action of its f extending from the column M, and whichextends over the handle V that serves to rotate the platform B, so thatsaid lifter can be operated convenient-ly with the same hand which holdsthe handle V. Through the arm h extends the stop i', (see Figs. 6 and7,) and said arm is recessed to make room for a spring, j', which has atendency to drive the stop back to the position shown in Fig. 6. Whenthe lifter is depressed so as to raise the presserslide the stop i canbe readily forced in so as to catch beneath the lifter by the same handwhich operates the lifter, and if the lifter is permitted to bear downupon the stop the spring s of the presser-slideretains said stopagainstthe action of its spring j', (see Fig. 7.)

stop t" is released, and allowed to recede to the position shown in Fig.6, and the presser-slide can be lowered with one hand, and withoutrequirin g the aid ofthe other hand for the purpose of withdrawing thestop. In the lifteris a notch, k', (see Fig. 1,) which, when thepresser-slide is allowed to descend, catches over a knife-edged rest,l', whereby the teeth of the upper feed-wheel are preserved againstinjury from striking against the face of the lower feed-wheel. The notch7c s stair-shaped, and the rest Z can be adjusted so as to engage witheither of the steps of the notch, and to retain the upper feed-wheel ata greater or smaller elevation above the lower feed-wheel according tothe thickness ofthe pile or layer of cloth or other material to be cut.The knife is also sharpened on its front edge, so that it By slightly ldepressing the rear end ofthe lifter the springpasses easily up and downthrough the material to be cut.

What I claim as new, and desire to secure by Letters Patent, is-

1. The spring-stop t', in combination with the lifter U ofthepresser-slide, and with the handle V, which serves to operate theplatform B, substantially in the manner set forth.

2. The protector O, provided with an indexslot or point to indicate theposition and course of the knife, substantially as described.

3. The rest l and stair-shaped notch k', in combination with the lifterU and feed-wheels D and S, substantially as set forth.

4. The eccentric pin b,.disk e', and screw f7, in combination withpinion c', cog-wheel df, and feed-wheel D, substantially as set forth.

5. The tappet-rod c, passing through the hollow guide-rod d extendingfrom the bracket C, in combination with the lever E, cam fi, bellcrankb, dog a, and feed-wheel D, substantially as described.

6. rlhe lever E, having a transverse motion on its pivot e, incombination with the tapering cam t', tappet-rod c, bell-crank b, dog a,and feed-wheel D, substantially as set forth.

7. The sleeve J, provided with a circular tlan ge, and connected to theeccentric pin 7c by pitman I, in combination with the notched cutter-barL, substantially as described.

ALBIN WARTH.

Witnesses W. HAUFF, E. F. KAs'rENHUBER.

